Class Task

java.lang.Object
  |
  +--Node
        |
        +--Task

Direct Known Subclasses:

Action, DiscourseTask, PL_BlockOffAction, PL_BlockOnAction, PL_DummyTask, PL_EpsIbmAction, PL_EpsTask, PL_PerTask, PL_Report3Task, PL_StartTask

class Task

extends Node

Tasks contain a Conjunction of Predicate specifications for their preconditions and outcomes, and a Vector of Predicate specifications for their parameters and provisions, so that the planner knows when and how they can be used. A Task node is parent to Conjunctions, and child to an ObjectiveCell.

Field Summary

(package private) java.util.Vector	available
(package private) int	circularityCount
(package private) static boolean	DEBUG
(package private) static java.lang.String	em
(package private) static int	expectedProvisionsCount
(package private) static java.lang.String	loc
(package private) PL_Planner	myPlan
(package private) java.util.Hashtable	outcomes
(package private) java.util.Vector	outcomeSpecs
(package private) java.util.Vector	outcomeVars
(package private) java.util.Vector	parameterSpecs
(package private) ObjectiveCell	parent
(package private) Conjunction	preconditions
(package private) java.util.Vector	preconditionSpecs
(package private) java.util.Vector	predicatesAddressed
(package private) java.util.Vector	provisionSpecs
(package private) java.util.Vector	provisionVars
(package private) Conjunction	subObjectives
(package private) java.util.Vector	subObjectiveSpecs
(package private) java.lang.String	varMapString
(package private) static java.lang.String	wm

Fields inherited from class Node

ac, em, loc, peData

Constructor Summary

Task(java.lang.String name, java.lang.String type)
Constructor.

Method Summary

void	addOutcomeVariable(java.lang.String outcomeName, Variable var) Add a variable to the list of vars associated with an outcome name in the hashtable "outcomes".
java.util.Vector	addPredicatesAddressed(Predicate p)
java.util.Vector	addPredicatesAddressed(java.util.Vector v)
boolean	addressesPredicate(Predicate p2) Determines whether this task has outcomeSpecs to address the Predicate argument.
void	addToOutcomeVars(Predicate p) Removes Variables from a Predicate and adds them to Vector outcomeVars.
void	addToProvisionSpecs(Predicate p) Adds a Predicate to a Vector of specifications of Task inputs.
void	addToProvisionVars(Predicate p) Removes Variables from a Predicate and adds them to Vector ProvisionVars.
java.lang.Object	clone()
boolean	equals(java.lang.Object obj) Just tests to see if the class of Task is the same.
java.lang.String	getName()
java.util.Vector	getOutcomeSpecs()
java.util.Vector	getOutcomeVars()
ObjectiveCell	getParent()
Conjunction	getPreconditions()
java.util.Vector	getPredicatesAddressed()
java.util.Vector	getProvisionNames() Returns a Vector of String names of provision variables for the Task.
java.util.Vector	getProvisions() Returns names of provisions.
java.util.Vector	getProvisionSpecs() Returns a Vector of Predicate specifications of Task inputs.
Predicate	getSpecificationOfVariable(java.lang.String varName, java.util.Vector specList) Find the specification that corresponds to the variable name.
Conjunction	getSubObjectives()
java.util.Vector	getSubObjectiveSpecs()
java.util.Vector	getTopicVarsFromPredVector(java.util.Vector pv)
java.util.Vector	getUnAddressedProvisionsSpecs() Return provisionSpecs of a Task that have not yet been addressed by Provides in ObjectiveCell parent.
java.lang.String	getVarMapString()
static void	main(java.lang.String[] args)
void	makeOutcome(java.lang.String outcomeName, java.util.Vector vars) Associate a vector of variables with an outcome name in the hashtable "outcomes".
java.util.Vector	makeProvidesForProvisions(Task parentTask, KnowledgeBase kB) Return a Vector of PEComponentData "provides" that describe which provision of the ObjectiveCell is connected to which provision of the Task below.
java.util.Vector	makeProvidesFromOtherOutcomesToProvisions(Task otherTask) Connect an outcome of otherTask to a provision of this task.
java.util.Vector	makeProvidesFromOutcomesToParent(Task parentTask, KnowledgeBase kB) Looks for shared variables between outcomes of task and parent.
Task	makeTask() Create a Task to correspond to this Task.
java.util.Vector	nextMakeProvidesForProvisions(Task parentTask, KnowledgeBase kB) This version of makeProvidesForProvisions looks to fill provision variables by making Provides between the vars and vars of the parent that they are unified with.
void	print()
void	propagateAttributes() The Attributes of a Task are the combined Attributes of the preconditions and the subobjectives.
void	setParent(ObjectiveCell o)
void	setProvisions()
java.lang.String	setVarMapString(java.lang.String inputNames)
boolean	vectorsShareVariables(java.util.Vector vars1, java.util.Vector specList1, java.util.Vector vars2, java.util.Vector specList2) Return true if any Variables in the vectors match (i.e.

Methods inherited from class Node

checkAttributes, convertAttributes, getAttributeCell, getAttributeFeatureAverage, getAttributeFeatureNames, getAttributeNames, getCost, getDuration, getNodeChildren, getQuality, makeAttribute, setCost, setDuration, setQuality, updateAttributeFeature

Methods inherited from class java.lang.Object

, finalize, getClass, hashCode, notify, notifyAll, registerNatives, toString, wait, wait, wait

Field Detail

myPlan

PL_Planner myPlan

parent

ObjectiveCell parent

subObjectives

Conjunction subObjectives

preconditions

Conjunction preconditions

circularityCount

int circularityCount

outcomes

java.util.Hashtable outcomes

varMapString

java.lang.String varMapString

outcomeSpecs

java.util.Vector outcomeSpecs

parameterSpecs

java.util.Vector parameterSpecs

provisionVars

java.util.Vector provisionVars

provisionSpecs

java.util.Vector provisionSpecs

outcomeVars

java.util.Vector outcomeVars

preconditionSpecs

java.util.Vector preconditionSpecs

subObjectiveSpecs

java.util.Vector subObjectiveSpecs

available

java.util.Vector available

predicatesAddressed

java.util.Vector predicatesAddressed

em

static java.lang.String em

wm

static java.lang.String wm

loc

static java.lang.String loc

DEBUG

static boolean DEBUG

expectedProvisionsCount

static int expectedProvisionsCount

Constructor Detail

Task

public Task(java.lang.String name,
            java.lang.String type)

Constructor.

Method Detail

getName

public java.lang.String getName()

getParent

public ObjectiveCell getParent()

setParent

public void setParent(ObjectiveCell o)

getOutcomeSpecs

public java.util.Vector getOutcomeSpecs()

getOutcomeVars

public java.util.Vector getOutcomeVars()

getSubObjectiveSpecs

public java.util.Vector getSubObjectiveSpecs()

getSubObjectives

public Conjunction getSubObjectives()

getPreconditions

public Conjunction getPreconditions()

propagateAttributes

public void propagateAttributes()

The Attributes of a Task are the combined Attributes of the preconditions and the subobjectives. Both are Conjunctions, and a Task is effectively an AND of the two. Get attributes of children and calc this Task's attributes. Parent of a Task is an ObjectiveCell.

Overrides:

propagateAttributes in class Node

getPredicatesAddressed

public java.util.Vector getPredicatesAddressed()

addPredicatesAddressed

public java.util.Vector addPredicatesAddressed(Predicate p)

addPredicatesAddressed

public java.util.Vector addPredicatesAddressed(java.util.Vector v)

addToProvisionVars

public void addToProvisionVars(Predicate p)

Removes Variables from a Predicate and adds them to Vector ProvisionVars.

addToOutcomeVars

public void addToOutcomeVars(Predicate p)

Removes Variables from a Predicate and adds them to Vector outcomeVars.

makeOutcome

public void makeOutcome(java.lang.String outcomeName,
                        java.util.Vector vars)

Associate a vector of variables with an outcome name in the hashtable "outcomes".

addOutcomeVariable

public void addOutcomeVariable(java.lang.String outcomeName,
                               Variable var)

Add a variable to the list of vars associated with an outcome name in the hashtable "outcomes".

clone

public java.lang.Object clone()

Overrides:

clone in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Just tests to see if the class of Task is the same.

Overrides:

equals in class java.lang.Object

addressesPredicate

public boolean addressesPredicate(Predicate p2)

Determines whether this task has outcomeSpecs to address the Predicate argument.

makeProvidesForProvisions

public java.util.Vector makeProvidesForProvisions(Task parentTask,
                                                  KnowledgeBase kB)

Return a Vector of PEComponentData "provides" that describe which provision of the ObjectiveCell is connected to which provision of the Task below. Cannot just compare provisions of parent task directly: no comparison between: child spec (KNOW ?company_name5 (EPS ?company_name5 ?value5)) and parent spec (KNOW ?company_name4 (Report3 ?company_name4 ?text3)). So look at objectives of parent, to connect var names, then find var names in parent's provisions if possible (it is possible that a var could exist in an objective and not have been passed as a provision). Allows provision names to be different.

nextMakeProvidesForProvisions

public java.util.Vector nextMakeProvidesForProvisions(Task parentTask,
                                                      KnowledgeBase kB)

This version of makeProvidesForProvisions looks to fill provision variables by making Provides between the vars and vars of the parent that they are unified with. Starts by getting list of provision specs for this task that have not been filled. This method allows use of vars in a provision spec that will not appear in the outcomes list.

makeProvidesFromOtherOutcomesToProvisions

public java.util.Vector makeProvidesFromOtherOutcomesToProvisions(Task otherTask)

Connect an outcome of otherTask to a provision of this task.

makeProvidesFromOutcomesToParent

public java.util.Vector makeProvidesFromOutcomesToParent(Task parentTask,
                                                         KnowledgeBase kB)

Looks for shared variables between outcomes of task and parent. If a pair of outcomes shares a variable (based on the outcome specs for predicates about that variable) then the two outcomes are connected with a PROVIDES.

getTopicVarsFromPredVector

public java.util.Vector getTopicVarsFromPredVector(java.util.Vector pv)

vectorsShareVariables

public boolean vectorsShareVariables(java.util.Vector vars1,
                                     java.util.Vector specList1,
                                     java.util.Vector vars2,
                                     java.util.Vector specList2)

Return true if any Variables in the vectors match (i.e. have the same specification)

makeTask

public Task makeTask()

Create a Task to correspond to this Task.

setProvisions

public void setProvisions()

getUnAddressedProvisionsSpecs

public java.util.Vector getUnAddressedProvisionsSpecs()

Return provisionSpecs of a Task that have not yet been addressed by Provides in ObjectiveCell parent.

getSpecificationOfVariable

public Predicate getSpecificationOfVariable(java.lang.String varName,
                                            java.util.Vector specList)

Find the specification that corresponds to the variable name. Prefer a spec that has var as topic variable.

getProvisions

public java.util.Vector getProvisions()

Returns names of provisions.

getProvisionNames

public java.util.Vector getProvisionNames()

Returns a Vector of String names of provision variables for the Task.

setVarMapString

public java.lang.String setVarMapString(java.lang.String inputNames)

getVarMapString

public java.lang.String getVarMapString()

getProvisionSpecs

public java.util.Vector getProvisionSpecs()

Returns a Vector of Predicate specifications of Task inputs.

addToProvisionSpecs

public void addToProvisionSpecs(Predicate p)

Adds a Predicate to a Vector of specifications of Task inputs.

print

public void print()

main

public static void main(java.lang.String[] args)